Pension Plans and Other Postretirement Benefits (Tables)

6 Months Ended

Mar. 28, 2020

Defined Benefit Pension Plans And Defined Benefit Postretirement Plans Disclosure [Abstract]

Components of Net Periodic Benefit Costs

The following table provides the components of net periodic benefit costs:

	Pension Benefits
	Three Months Ended						Six Months Ended
	March 28,			March 30,			March 28,			March 30,
	2020			2019			2020			2019
Interest cost	$	720		$	985		$	1,440		$	1,971
Expected return on plan assets		(320	)		(430	)		(640	)		(861	)
Amortization of net loss		862			867			1,724			1,733
Net periodic benefit cost	$	1,262		$	1,422		$	2,524		$	2,843

	Postretirement Benefits
	Three Months Ended						Six Months Ended
	March 28,			March 30,			March 28,			March 30,
	2020			2019			2020			2019
Interest cost	$	38		$	68		$	75		$	137
Amortization of prior service credits		(125	)		(125	)		(249	)		(249	)
Amortization of net (gain)		(196	)		(190	)		(393	)		(380	)
Net periodic benefit cost	$	(283	)	$	(247	)	$	(567	)	$	(492	)